Innovate LC-1 w/DB Gauge....shoot MAPerformance a PM and hell hook you up with an awesome price

and you can install and wire it yourself but unless you got a TIG welder in your garage you will need someone to weld an o2 bung into the very end of your downpipe, it needs to be 36in from the turbo outlet, this is the best location for sensor life, and also that it is on like a 35-45* angle, aka on a clock face 9,10,11,1,2,3, anything else and condensation in your exhaust can damage the sensor over time

 

Any exhaust shop can install the bung for you.